IL4 and Parkinson disease: CBA measurements showed that the serum concentrations ofIL-10did not differ significantly between PD patients and HCs [1.76 (1.52–2.37), 95%CI (1.63, 1.98) vs. 1.68 (1.57–1.86), 95%CI (1.61, 1.81), P = 0.278, Figure 4A], the serum concentrations of IL-4 also did not differ significantly between PD patients and HCs [2.17 (1.80–2.36), 95%CI (1.97, 2.25) vs. 2.22 (2.06–2.46), 95%CI (2.11, 2.43), P = 0.172, Figure 4B].